<?php
/*! \page license
 *
 * Copyright (c) 2011, Blaise Lengrand
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this list
 * of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this
 * list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 * Neither the name of `snWin' nor the names of its contributors may be used to
 * endorse or promote products derived from this software without specific prior
 * written permission.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

  // Initialize the environement
  require_once("../feed.php");
  global $_CURRENT;

  ob_start();

  require_once('system/pages/social/twitter/EpiCurl.php');
  require_once('system/pages/social/twitter/EpiOAuth.php');
  require_once('system/pages/social/twitter/EpiTwitter.php');
  require_once('system/pages/social/twitter/secret.php');

  function callback_error($message)
  {
    echo "Cannot get access to Twitter\n";
    echo $message;
  }

  if (isset($_GET['oauth_token']))
  {
    try
    {
      // The user comes from Twitter
      $twitter_obj = new EpiTwitter($consumer_key, $consumer_secret);
      $twitter_obj->setToken($_GET['oauth_token']);
      $token = $twitter_obj->getAccessToken();

      $oauth_token = $token->oauth_token;
      $oauth_token_secret = $token->oauth_token_secret;

      // Gets user name and print it
      $twitter_obj->setToken($oauth_token, $oauth_token_secret);
      $user_info = $twitter_obj->get_accountVerify_credentials();
      echo "You are now logged in as `".($user_info->screen_name)."'";

      // Storing token keys
      $_SESSION['twitter_oauth_token'] = $oauth_token;
      $_SESSION['twitter_oauth_token_secret'] = $oauth_token_secret;
      header("Location: ".$_CURRENT['url']."&".htmlspecialchars(SID));
    }
    catch (EpiTwitterException $e)
    {
      callback_error($e->getMessage());
    }
    catch (Exception $e)
    {
      callback_error($e->getMessage());
    }
  }
  else if (isset($_GET['denied']))
  {
    // User denied access
    echo 'You must sign in through Twitter first';
  }
  else
  {
    // User not logged in
    echo 'You are not logged in';
  }
  ob_end_flush();
?>
